intrinsicMatrix
A matrix that relates a camera’s internal properties to an ideal pinhole-camera model.
Declaration
var intrinsicMatrix: matrix_float3x3 { get }Discussion
The intrinsic matrix allows you to transform 3D coordinates to 2D coordinates on an image plane using the pinhole camera model. Equations like the following commonly represent the intrinsic matrix as K:
[Image]
The equation expresses all values in pixels. The values fx and fy are the pixel focal length, and are identical for square pixels. The ox and oy values are the offsets of the principal point, from the top-left corner of the image frame. The principal point is relative to the top-left corner of the top-left pixel. Each pixel value represents a sampled value from the center of that pixel.